<template>
  <div id="app">
    <!--  - 需求1: 根据给的初始数据, 把购物车页面铺设出来
          - 需求2: 点击对应删除按钮, 删除对应数据
          - 需求3: 当数据没有了, 显示一条提示消息
     -->
    <table class="tb">
      <tr>
        <th>编号</th>
        <th>品牌名称</th>
        <th>创立时间</th>
        <th>操作</th>
      </tr>
      <!-- 循环渲染的元素tr -->
      <tr v-for="(item,index) in list" :key="item.id">
        <td>{{index+1}}</td>
        <td>{{item.name}}</td>
        <td>{{item.time}}</td>
        <td>
          <button @click="del(item.id)">删除</button>
        </td>
      </tr>
      <tr v-if="(list.length===0)">
        <td colspan="4">没有数据咯~</td>
      </tr>
    </table>
  </div>
</template>

<script>
export default {
      data(){
        return {
          flag:false,
        list: [
          { id: 1, name: "奔驰", time: "2020-08-01" },
          { id: 2, name: "宝马", time: "2020-08-02" },
          { id: 3, name: "奥迪", time: "2020-08-03" },
        ]
        }
      },
      methods: {
        del(id){
          this.list =this.list.filter(item=>item.id != id)
        }
      },

}
</script>

<style>
    #app {
      width: 600px;
      margin: 10px auto;
    }

    .tb {
      border-collapse: collapse;
      width: 100%;
    }

    .tb th {
      background-color: #0094ff;
      color: white;
    }

    .tb td,
    .tb th {
      padding: 5px;
      border: 1px solid black;
      text-align: center;
    }

    .add {
      padding: 5px;
      border: 1px solid black;
      margin-bottom: 10px;
    }
  </style>